Change format of values from array from integer to unix-timestamp for a chart

General
4

Your issue is you are not using a time series data in the chart, so you will need to format your labels array values.
try

 times[i] = `${dt.getHours()}:${dt.getMinutes()}`;

chrome_screenshot_1696875419043
chrome_screenshot_16968754190432048×1544 141 KB

[edit] to pad the hours and minutes try

    times[i] = `${dt.getHours().toString().padStart(2, "0")}:${dt.getMinutes().toString().padStart(2, "0")}`;

output the is
07:05

Or return time series data, Example.

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Also If this is data return from a data base you could have the data base return the data using AS syntax, e.g.

SELECT MINUTESUM AS y, TIME AS x
FROM table_name ......

Then you would not need the function to foreEach through the data, as it will be return in the correct format to simply add to the chart data object property.